JPH07180360A - Form fixing jig at rise part - Google Patents

Abstract

PURPOSE:To place concrete integrally with a floor slab and a rise part by allowing a supporting body, which is mounted to a plurality of supporting rods whose lower ends are fixed, to hold forms on either side of the rise part. CONSTITUTION:Each lower end of a plurality of supporting rods 11, 11 each having external threads 11a, 11a on the upper portion thereof is fixed to arranged bars of a floor slab 1 or a beam 2 of a reinforced concrete structure so that the supporting rods are spaced from each other. Next, gate-shaped supporting bodies 21, 21 each are mounted to the upper part of each of the rods 11 in such a manner that the height of each of the bodies 21 can be adjusted by tightening nuts 22, 22. And forms 7, 8 on either side of a rise part 3, on which concrete is to be placed integrally with the slab 1 using hanging plates 21d, 21d on either side of each of the bodies 21, are positioned and retained using nails 26 or the like. As a result, concrete can be placed integrally with the slab 1 and the rise part 3, and concrete of the slab 1 can be sufficiently leveled and troublesome repairing work after placing of concrete can be avoided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rising part formwork fixing jig for fixing a formwork (temporary frame) for placing concrete at a rising part on a floor slab of a reinforced concrete structure.

[0002]

2. Description of the Related Art In general, on a floor slab, which is the frame of various reinforced concrete structures, for example, at the boundary between the indoor side and the balcony side of the floor slab, a window frame sash (sill) is placed. Part (small vertical wall) is provided. This type of rising part is usually constructed by concrete pouring on site.

As a method of constructing the rising portion on site, it is often the case that the concrete of the floor slab is cast and hardened, then the rising portion form is installed on the upper surface and the concrete is cast. However, in this construction method, after the concrete of the floor slab is hardened, the concrete of the rising part is placed, so a joining surface is created between the concrete of the floor slab and the concrete of the rising part, and one side of the rising part is external. However, there is a problem in that it causes water leakage such as rainwater intrusion from the joint surface. In order to prevent this, it is troublesome to take measures against water leakage such as sealing the portion facing the outside of the splice surface, waterproofing sheet, coating film waterproofing or mortar waterproofing.

Therefore, on the other hand, attention has been focused on a construction method in which the floor slab and the rising portion are integrally concrete-cast on site. In this case, the standing formwork is placed on the outside of the floor slab where there is a large step on the rising part, and the thick square timber is placed on the inside of the room where there are few steps on the receiving jig and fixed with a numbering wire, etc. The concrete of the slab and the rising part is cast integrally. With this construction method, there is no need to worry about water leakage due to the occurrence of the above-mentioned joint surface and troublesome measures against water leakage such as sealing.

[0005]

However, in the case of the construction method in which the concrete of the floor slab and the rising portion is integrally cast at the site, as described above, the thick thick square timbers are used as the formwork. During pouring, the floor slab, which is the lower position of the thick timber, cannot be leveled with concrete (slab finishing work such as iron pressing), and that part becomes a rough surface and needs to be repaired later. However, the thick square timbers do not pass well as a formwork, and there is a problem that repairing such as later scraping or repainting the concrete surface of the rising portion is troublesome, and those works are troublesome.

[0006] Further, since the heavy-edged timber is heavy, it is difficult to carry and install it, and it is not possible to properly fix it with a numbered wire, and the wire must be cut and removed when cleaning up afterwards. Inefficiency is a factor that hinders building productivity.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to easily and reliably position and hold both side molds for placing concrete on the rising portion of a floor slab.
The concrete of the floor slab and the rising part can be cast integrally without using the conventional thick timber, the floor slab concrete can be leveled sufficiently, and the troublesome repair work afterwards is not necessary. There is a concern about water leakage due to the generation of a connecting surface,
An object of the present invention is to provide a rising part formwork fixing jig that can be greatly useful in improving the efficiency of construction work, such as eliminating the trouble of water leakage measures such as sealing.

[0008]

In order to achieve the above object, the rising part form fixing jig of the invention of claim 1 is a mold of the rising part which is concrete-cast with the floor slab of a reinforced concrete structure. In the frame fixing jig, a plurality of support rods each having a lower end fixed to the floor slab or the reinforcing bar of the beam and erected at a distance from each other and having male threads on the upper portion, and the upper portions of these support rods, respectively. It is provided with a plurality of gate-shaped supports which are mounted so that their heights can be adjusted by tightening nuts, and which hold down both side molds of the rising portions by means of stoppers at both side hanging plate portions.

By using such a rising-section form-fixing jig, a plurality of support rods are fixed to the floor slab or the beam-reinforcing rods at their lower ends and are erected at a distance from each other. A gate-shaped support is fitted on each of the upper parts, and the height is adjusted, and then fixed and fixed by tightening a nut that is screwed into the male screw of the support rod. The two formworks for concrete pouring are joined together and positioned and held through a fastening means such as a nail. With this, it is possible to easily and securely fix the both side molds in a floating state at an appropriate position, and it is possible to cast concrete of the floor slab and the rising part integrally without using the conventional thick square timber. , The floor slab can be leveled with concrete.

This eliminates the need for troublesome repair work after the concrete is poured between the floor slab and the rising portion, and at the same time, there is concern about water leakage due to the generation of the joint surface and troublesome measures against water leakage such as sealing. It will be eliminated and the efficiency of construction work can be improved.

Further, in the case of the above-mentioned rising part mold fixing jig, after the concrete is cast and hardened, the nuts on the tops of the respective supporting rods are loosened, so that the gate-shaped supports can be easily combined with the two-sided molds. It can be removed and disassembled, it is lightweight, easy to handle for transportation, etc., and can be repeatedly used for other construction sites. Further, the support rod left partially protruding from the rising portion can be used as, for example, an anchor bolt of a window frame sash (sill) placed on the rising portion.

The lower end of the support rod may be welded to the floor slab or the reinforcing bar of the beam and fixed vertically. However, a U-shaped mounting bracket with a bolt is provided at the lower end of the support rod. It is preferable that the metal fitting is fitted on the floor slab or the reinforcing bar of the beam and is vertically fixed by bolting. With this, the support rod can be easily fastened and fixed without welding to the floor slab or beam reinforcement, and by loosening the bolt and sliding the U-shaped mounting bracket to the reinforcement, the support rod can be erected. The installation position can be freely selected and adjusted.

Further, the support rod may have a seat plate at the lower end, and the seat bar may be vertically fixed by adhering the seat plate to the upper surface of the precast beam of the floor slab. As a result, the support rod can be easily erected and fixed to the precast beam, and the erected position of the support rod can be freely selected.

Further, the gate-shaped support has an elongated hole for position adjustment in a top plate portion, and is fitted to a support rod so as to be slidably adjustable in height and width directions through the elongated hole. It is preferable that the upper and lower nuts are positioned and fixed by a pair of nuts. This makes it easy to align the gate-shaped supports of each support rod, that is, level in the height direction and pass in the width direction, and position and fix both side molds at appropriate positions. become able to.

Further, the gate-shaped support is divided into two members each having an inverted L-shaped plate shape, and the top plates of both members have elongated holes for position adjustment, respectively, and support rods. On the other hand, it is preferable that the members are slid in the width direction through the elongated holes so that the hanging plate portions of both members can be adjusted to adjust the mutual distance between them, and are positioned and fixed by a pair of upper and lower nuts. This makes it easy to align the level of the gate-shaped support with respect to the support rod in the height direction and to pass it through in the width direction as described above, and it is possible to position and fix both side molds at appropriate positions and to support them. It is possible to arbitrarily set the interval of the hanging plate portion between the two divided members of the body, and further, the interval of the two-sided molds, and it can be applied to the construction of the rising portion of various thicknesses.

According to a sixth aspect of the present invention, there is provided a rising-edge formwork fixing jig in which the rising-edge formwork fixing jig is concretely cast integrally with a floor slab of a reinforced concrete structure to achieve the above object. The floor slab or beam reinforcement is fixed to the bottom end of each of the support bars, and the column bars or vertical wall bars are arranged at both ends of the rising part. The tubular mounting brackets that are adjustable and fastened to each other, the receiving members that are individually fixed to these mounting brackets, and the head parts are slidably fitted and fastened to these receiving members from both sides so that the hanging plate parts can be connected to each other. It is provided with opposite L-shaped supports which are mounted in a state of facing each other with an appropriate interval, and which have both hanging plates for positioning and holding both side molds of the rising portion through the stopper means. .

If such a rising-section form-fixing jig is used, a plurality of support rods are erected at fixed intervals at the lower ends of the floor slabs or beams, or at both ends of the rising section. The cylindrical mounting brackets are vertically adjusted in height and fastened to the column bars or vertical wall bars to be placed on the brackets, and the pair of inverted L-shaped supports on both sides are attached to the fixtures fixed to these mounting brackets. Of the heads are slidably fitted and fastened to each other so that the hanging plate parts are opposed to each other with an appropriate interval. Both sides of the formwork for installation are joined and positioned and held via a fastening means such as a nail. With this, it is possible to easily and surely fix the molds on both sides in an appropriate position in a floating state.
The same effect as that of the invention described above can be obtained, and in addition, by adjusting the sliding fitting depth of each head portion of the pair of inverted L-shaped supports on both sides of the support member, It is possible to set the interval of the hanging plate part, and even the interval of the formwork on both sides, to be applicable to the construction of the rising part of various thicknesses.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of a rising part formwork fixing jig of the present invention will be described below with reference to the drawings. First, FIGS. 1 and 2 show a first embodiment of a rising portion formwork fixing jig of the present invention.
As shown in FIG. 2, in various reinforced concrete structures, the floor slab 1 as a frame is constructed on the beam 2, and the window sash ( A short rising part (small vertical wall) 3 on which a threshold is placed is provided.

When constructing the floor slab 1 and the beam 2 in such a concrete structure, a plurality of reinforcing bars, that is, four or more main reinforcing bars 4 are laterally installed as reinforcing bars of the beam 2.
A large number of stirrup bars 5 are provided at a small pitch so as to surround them, and a reinforcing bar (not shown) of the floor slab 1 is arranged above the stirrup bars 5, and their bottom surface and side surfaces have a covering dimension and are not shown. Supports a formwork (temporary frame) for placing concrete from below, on which a beam 2, a floor slab 1, and a rising part 3 are provided.
And the concrete are poured at the same time.

At this time, in order that the concrete of the rising part 3 on the upper surface of the floor slab 1 can also be simultaneously cast, the reinforcing bars of the rising part 3 are spaced in the longitudinal direction of the rising part 3. A plurality of vertical streaks (not shown) are inserted into the bar arrangement of the beam 2 to be tied up, and the horizontal streaks 6 as shown in FIG. Formwork on both sides for concrete placement (temporary frame)
The rising part formwork fixing jig of the present invention is used to fix and support 7, 8.

This rising part form fixing jig is attached to one of the reinforcements of the floor slab 1 or the beam 2, for example, to one of the main reinforcements 4 in the reinforcement of the beam 2 here. A plurality of support rods 11 (only two left and right are shown in the drawing) which are fixedly mounted at their lower ends and are spaced apart from each other at appropriate intervals, and the above-mentioned rising portions 3 attached to the upper portions of these support rods 11 The structure is mainly composed of a portal-shaped support body 21 for positioning and holding the two-sided molds 7 and 8 through a stopper.

Each of the support rods 11 is like an anchor bolt in which a steel bar having a diameter of about 9 mm is cut into a length of about 150 to 200 mm, and a male screw 11a is engraved over an appropriate range on the upper end side. These support rods 11 are the above-mentioned main bars 4
On the other hand, the lower end portion may be directly welded and fixed upright, but in this embodiment, as shown in FIG. 2, the lower end portion has a U-shaped mounting member 13 with a bolt 12, and this U-shaped mounting member 13
Is fixed so as to be erected from above onto the main bar 4 and tightened with the bolt 12. In addition, the U-shaped mounting member 13 has one side plate portion fixed to one side of the lower portion of the support rod 11 by welding in a downward open state (inverted U-shape state), and the bolt 12 is tightened to the other side plate portion. It is threaded as possible.

The gate-shaped support member 21 is formed by bending a single steel plate, and a long hole 21b for longitudinal adjustment is formed in the center of a top plate portion 21a for a long time in the longitudinal direction. The support rod 11 is slidably fitted in the support rod 11 in the front-rear direction (thickness direction of the rising portion 3) in the hole 21b by tightening a pair of upper and lower nuts 22, 23 screwed to the male screw 11a of the support rod. It is attached and fixed via wide washers 24 and 25. In addition, the both side hanging plate portions 21c and 21d bent downward from both ends of the top plate portion 21a of the gate-shaped support body 21,
The two side frames 7 and 8 are joined to the inside of these to position and hold them through the stopping means. For example, four nails 26 are used as the stopping means.
Four nail holes 21e are formed in each of 1c and 21d.

The molds 7 and 8 on both sides of the rising portion 3 are
Is a wooden strip plate that can be nailed, and the lower side is a diagonal (tapered) cut surface so that it does not interfere with the concrete leveling of the floor slab 1 (slab finishing work such as iron pressing). It has 7a and 8a. It should be noted that the two-sided molds 7 and 8 may be made of plastic board or steel plate other than wood. In this case, a screw hole is formed in the plastic board or steel plate as a stopping means, and the support 21 Both side hanging plate portions 21c and 21d are positioned and held by screws.

A method of placing concrete on the floor slab 1 and the beam 2 and the rising portion 3 by using the rising portion frame fixing jig having the above-described structure will be described. First, as described above, the floor slab 1 and Reinforcing bars of the beam 2 and the rising portion 3 are provided respectively, and the floor slab 1 and the beam 2 for concrete casting (temporary frame) are supported from below by having cover dimensions on their lower surfaces and side surfaces. Set up.

In this state, the two support rods 11 of the stand-up formwork fixing jig are fitted to one main bar 4 of the beam reinforcement of the floor slab and the U-shaped mounting brackets 13 at their lower ends are fitted. Tighten the bolts 12 to fix them upright. With this, the support rod 1
1 does not need to be welded to the main bar 4 and the bolt 1
Before tightening 2, it is possible to slide and adjust the U-shaped mounting bracket 13 in the longitudinal direction (horizontal direction) of the main bar 4, and the left and right standing intervals (pitch) between the support rods 11 are set so that both side molds 7, 8 can be appropriately selected in consideration of the resistance to bending and the like. At this time, each support rod 11 is further stabilized when the middle of the support rod 11 is tied to the horizontal bar 6 which is the bar arrangement of the rising portion 3.

A nut 23 is screwed onto the upper portion of each of the support rods 11 fixed upright in this manner, and a washer 25 is fitted onto the nut 23,
The gate-shaped supports 21 are fitted one by one through the elongated holes 21b, and the nuts 2 are further mounted thereon by way of washers 24.
2 are screwed together and temporarily tightened, and in this state, each gate-shaped support 2
Align position 1. That is, each support 21 is rotated to correct the front, rear, left, and right directions, the vertical height is adjusted to adjust the level in the height direction, and further the slide is adjusted in the front and rear direction through the elongated hole 21b to adjust the width direction. Make a pass. In this way, the upper and lower nuts 22 and 23 are fully tightened to support each support rod 1
Each support 21 is positioned and fixed with respect to 1.

The nails 26 are adjusted while the heights are adjusted by joining both side molds 7 and 8 for placing concrete on the rising portion 3 to the inner surfaces of the hanging plate portions 21c and 21d on both sides of the gate-shaped support 21. Positioning and holding in the suspended state by driving. The height and front-back adjustment of the support body 21 with respect to the support rods 11 may be performed in a state where the two-sided molds 7 and 8 are nailed to the both-side hanging plate portions 21c and 21d of the support body 21. .

With this arrangement, both side molds 7 and 8 of the rising portion 3 can be easily and surely positioned and fixed at an appropriate position in a floating state, and the floor slab 1 and the beam can be eliminated without using the conventional thick square bar. 2 and the rising part 3 can be cast in one piece, and the floor slab 1 can be leveled with concrete. In particular, since the two-sided molds 7 and 8 have oblique (tapered) cut surfaces 7a on the lower side, the concrete leveling of the floor slab 1 (such as a trowel presser) is not disturbed by the molds 7 and 8. Slab finishing work) can be performed more sufficiently. This eliminates the need for troublesome repair work after placing the concrete between the floor slab 1 and the rising portion 3, and eliminates the worry of water leakage due to the generation of a joint surface and the trouble of water leakage countermeasures such as sealing. The efficiency of construction work can be improved. At this time, the top end (upper surface) of the rising portion 3
By raising the inside of the room and lowering the balcony, the rain will be improved.

In addition, in the case of the above-mentioned rising part mold fixing jig, after the concrete is cast and hardened, the nuts 22 on the upper portions of the respective support rods 11 are loosened, so that the gate-shaped support member 21 can be easily formed.
Can be removed together with the formwork 7 and 8 on both sides and disassembled. It is lightweight and easy to handle for transportation, and can be repeatedly diverted to other construction sites. Further, the support rod 11 left partially protruding from the rising portion is used as a sash anchor of a window frame sash (sill) placed on the rising portion 3, for example.

Next, a second embodiment of the present invention will be described with reference to FIG. Here, even if the slide adjustment is performed back and forth through the elongated hole 21b of the gate-shaped support 21 described above, the support 2
When the center of 1 cannot be aligned with the center of the rising portion 3, one of the reinforcements of the floor slab 1 or the beam 2, for example, the reinforcement of the beam 2 (main reinforcement 4 and stirrup 5) is Auxiliary reinforcing bars 31 and a plurality of auxiliary mounting reinforcing bars 31a orthogonal to the auxiliary reinforcing bars 31 are placed in a state of being assembled by welding and fixing in advance, and each auxiliary mounting reinforcing bar 31a is bound or welded to the main bar 4 of the beam 2.
With this, the auxiliary reinforcing bar 31 is fixed at a desired position in parallel with the main reinforcing bar 4 of the beam 2, and the lower ends of the support bars 11 are welded to the auxiliary reinforcing bar 31 to be vertically fixed. This is support 21
The support rod 1 is placed at the required position where the center of the
1 can be erected and fixed. The rest of the configuration is the same as that of the first embodiment, so its explanation is omitted.

In the case of the embodiment shown in FIG. 3, the support rods 11, the auxiliary reinforcing bars 31, and a plurality of auxiliary mounting reinforcing bars 31a orthogonal to the supporting bars 11 and the supporting bars 31a are welded and fixed in advance at the factory. It may be carried in on site and installed.

FIG. 4 shows a third embodiment of the present invention.
This is applied to the case where a precast beam (PCa; ready-made reinforced concrete beam) 33 produced in a factory is used as a beam of a floor slab of a reinforced concrete structure which has been often seen in recent years, and the lower end portion of each support rod 11 is applied. The flat seat plate 34 is fixed at a right angle by welding or the like, and the seat plate 34 is vertically fixed by adhering it to the upper surface of the precast beam 33 with an adhesive. As a result, the support rod 11 can be easily erected and fixed to the precast beam 34, and the erected position of the support rod 11 can be freely selected. The rest of the configuration is the same as that of the first embodiment, so its explanation is omitted.

FIG. 5 shows a fourth embodiment of the present invention.
Here, the lower end of the support rod 11 is welded and fixed to the reinforcement of the floor slab 1 or the beam 2, for example, the stirrup bar 5 of the beam 2, and the high nut 36 is attached to the upper male screw 11a of the support rod 11.
The gate-shaped support body 21 is placed on this, and the bolt 37 is screwed onto the high nut 36 by penetrating the slot 21b of the top plate portion 21a of the support body 21 from above. The support 21 is fixed in position. Even this is the support 21
The height and front-back position of the support rod 11 relative to the support rod 11 can be adjusted. The other points are the same as those in the first embodiment, and the description thereof will be omitted.

FIG. 6 illustrates a fifth embodiment of the present invention. Here, each of the above-mentioned gate-shaped supports 21 is inverted L
It is divided into two plate-shaped members 38, 39, and top plates 38a, 39a of both members 38, 39 are provided with elongated holes 38b, 39b for position adjustment, respectively.
Plural nail holes 38d and 39d are formed in 8c and 39c, respectively. Then, these members 38 and 39 are opposed to each other,
The top plate portions 38a and 39a are vertically overlapped with each other, and in this state, the oblong holes 38b and 3 of the support rod 11 are the same as those described above.
9b and fit each other, and slide adjustment is performed in the vertical and width directions, respectively, and a pair of upper and lower nuts 22, 23
Is fastened via washers 24 and 25 so that it can be fixed at an arbitrary position.

In this way, the gate-shaped support body 21 of the divided structure composed of the two members 38 and 39 loosens the upper and lower nuts 22 and 23 once, so that the height of the support rod 11 with respect to the support bar 11 is increased. The leveling in the vertical direction and the matching in the width direction can be easily performed, and both side molds 7 and 8 can be positioned and fixed at appropriate positions, and the two dividing members 38 and 39 can be moved in both directions. Thereby, the interval between the hanging plate parts 38c and 39c, and hence the interval between the two side molds 7 and 8 can be set arbitrarily, and can be easily applied to the construction of the rising part 3 having various thicknesses.

FIGS. 7 and 8 show a sixth embodiment of the present invention. Here, main bars 4 such as column bars or vertical wall bars (splice bars) such as precast plates are mainly provided on both ends of the rising portion 3.
This is effectively applicable when 1 is vertically exposed to an appropriate height, and is fastened by fitting it to the vertical main bar 41 on both ends (not shown on one side) from this upper end. Tubular mounting bracket 42 and this tubular mounting bracket 42
And a pair of inverted L-shaped supports 44 and 45 mounted on both sides of the receiving part 43 by slidably fitting and fastening head parts 44a and 45a to the receiving part 43, respectively. It becomes.

The tubular mounting member 42 is a round pipe such as a steel pipe having a diameter larger than that of the main bar 41, has a length of about 20 cm, and has nuts 46 welded to the front side upper and lower ends thereof. It can be fastened to the main bar 41 by screwing and tightening a bolt 47. The receiving member 43 is fixed to the intermediate portion on the front side of the tubular mounting member 42 by welding or the like.

The receiving member 43 is made of a steel plate or the like and has a horizontal rectangular tube shape with both ends open. The front plate portion is provided with vertically elongated slit-like cuts 43a and 43b. On the other hand, the pair of inverted L-shaped supports 44, 4 on both sides
Reference numeral 5 is a configuration having laterally-oriented rectangular tube-shaped head portions 44a and 45a and hanging plate portions 44b and 45b vertically provided from these end portions, and cuts 43a and 43b from the respective head portions 44a and 45a. Bolts 48 and 49 which are slidably fitted are provided in a protruding manner, and nuts 50 and 51 are screwed to these so as to be tightenable. That is, in a state where the bolts 48 and 49 are slidably fitted into the notches 43a and 43b of the receiving member 43, the support members 4 on both sides are
The head portions 44a, 45a of the bolts 4, 45 are slidably fitted into the receiving member 43 from the opposite directions in a vertically staggered manner to form the bolts 48, 4
By tightening the nuts 50 and 51 on the shaft 9, the support members 44 and 45 on both sides of the nuts 50 and 51 are attached and held so that the hanging plate portions 44b and 45b are opposed to each other with an appropriate interval. Four nail holes 44c, 45c are provided in each of the hanging plate portions 44b, 45b.
Is formed, and the form frames 7 and 8 on both sides are joined and fixed by the nails 26 to be positioned and held.

In the rising part form fixing jig according to the fifth embodiment, the main bar 41 such as a column bar or a vertical wall bar (splice bar) such as a PC plate arranged at both ends of the rising part 3 has a cylindrical shape from above. The fittings 42 are fitted, and the upper and lower welding nuts 46 are respectively deeply tightened and tightened and fixed while adjusting the vertical height. Then, a pair of inverted L-shaped supports 4 on both sides is attached to the receiving tool 43 fixed to the mounting bracket 42.
The head portions 44a, 45a of the bolts 4, 45 are slidably fitted in the upper and lower steps from opposite directions, and the bolts 48, 49 are fitted with the nuts 50,
By tightening 51, the supports 44 and 45 are fastened. At the time of tightening, the depth of fitting the head portions 44a, 45a of the supports 44, 45 into the receiving member 43 is adjusted to set the mutual positions and mutual intervals of the hanging plate portions 44b, 45b.

A pair of supports 44, 45 on both sides
The both side molds 7 and 8 for concrete pouring of the rising portion 3 are joined to the inner surfaces of the hanging plate portions 44b and 45b facing each other, and are fixed by nails 26 for positioning and holding. Now both sides of the form 7,
8 can be easily and surely fixed to a proper position in a floating state, and the same effect as the first embodiment can be obtained. In addition, one pair on both sides of the inverted L shape is provided. By adjusting the sliding fitting depth of the head portions 44a, 45a of the supports 44, 45 with respect to the receiving member 43, the distance between the hanging plate portions 44b, 45b can be reduced, as in the fifth embodiment. The intervals between the two side molds 7 and 8 can be set arbitrarily, and can be applied to the construction of the rising portions 3 having various thicknesses.

In the sixth embodiment, an example has been described in which the tubular mounting member 42 is fitted and fixed to the main bar 41 such as a column bar or a vertical wall bar such as a precast plate arranged on both ends of the rising portion 3. As in the first to fifth embodiments, the tubular fittings 42 are fitted to the support bars 11 which are vertically installed with their lower ends fixed to the reinforcing bars of the floor slab 1 or the beams 2, respectively. It may be fixed in a complicated manner.

[0043]

EFFECT OF THE INVENTION Since the rising part formwork fixing jig of the present invention is constructed as described above, the two-sided formwork for concrete pouring of the rising part on the floor slab of the reinforced concrete structure can be easily and reliably positioned and held. The floor slab and the rising part can be cast in one piece without using the conventional thick timber, and the floor slab can be leveled evenly at that time, which is troublesome afterwards. Not only does repair work become unnecessary, but of course there is no need to worry about water leaks due to the generation of joint surfaces, and troublesome measures for water leaks such as sealing can be greatly helped to improve the efficiency of construction work.

[Brief description of drawings]

FIG. 1 is a perspective view showing a first embodiment of a rising part frame fixing jig of the present invention.

2A is a plan view of the first embodiment, FIG. 2B is a front view of the same, and FIG. 2C is a side view of the same.

FIG. 3 is a perspective view showing a second embodiment of the rising portion form fixing jig of the present invention.

FIG. 4 is a perspective view showing a third embodiment of a rising part frame fixing jig of the present invention.

FIG. 5 is a front view showing a fourth embodiment of the rising part form fixing jig of the present invention.

6A and 6B show a fifth embodiment of the rising part formwork fixing jig of the present invention, in which FIG. 6A is a plan view and FIG. 6B is a front view.

FIG. 7 is a perspective view showing a sixth embodiment of the rising part frame fixing jig of the present invention.

8A is a plan view of the sixth embodiment, FIG. 8B is a front view of the same, and FIG. 8C is a side view of the same.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Floor slab, 2 ... Beam, 3 ... Rising part, 4, 5 ... Floor slab or beam arrangement (4 ... Main bar, 5 ... Stirrup bar), 7, 8
… Formwork, 11… Support rods (rebars / sash anchors), 11
a: male screw, 12 ... bolt, 13 ... U-shaped mounting bracket, 2
2, 23 ... Nut, 21 ... Gate-shaped support, 38, 39
... Inverted L-shaped plate member, 21a, 38a, 39a ... Top plate part,
21b, 38b, 39b ... elongated holes, 21c, 21d, 38
c, 39c ... Hanging plate part, 26 ... Stopping means (nails), 33 ...
Precast beams, 34 ... seat plate, 41 ... column reinforcement or vertical wall reinforcement,
42 ... Cylindrical mounting bracket, 43 ... Receptor, 44, 45 ... Inverted L-shaped support, 44a, 45a ... Head part, 44b, 4
5b ... Hanging plate part, 47, 48, 49 ... Bolt, 50, 5
1 ... nut.

Claims (6)

[Claims] 1. A formwork fixing jig at a rising portion, which is concrete-integrated with a floor slab of a reinforced concrete structure, in which a lower end is fixed to each reinforcing bar of the floor slab or the beam, and a standing space is provided between them. And a plurality of support rods having male threads on the upper part, and height-adjustable mounts on the upper parts of these support rods by tightening nuts, respectively. A rising part formwork fixing jig comprising a plurality of gate-shaped supports for positioning and holding the same. 2. The support bar has a U-shaped mounting bracket with a bolt at the lower end, and the U-shaped mounting bracket is fitted to the beam reinforcement of the floor slab and is vertically fixed by bolting. The rising part formwork fixing jig according to claim 1. 3. The support rod has a seat plate at a lower end thereof, and is vertically fixed by adhering the seat plate to an upper surface of a precast beam of a floor slab.
The rising part formwork fixing jig described. 4. The gate-shaped support body has an elongated hole for position adjustment in a top plate portion, and is fitted into a support rod so as to be slidably adjustable in height and width directions through the elongated hole. The rising part formwork fixing jig according to any one of claims 1 to 3, which is positioned and fixed by a pair of upper and lower nuts. 5. The gate-shaped support body is divided into two members each having an inverted L-shaped plate shape, and the top plate portions of both members have elongated holes for position adjustment, and the support rod is 4. The sliding member is slid in the widthwise direction through the elongated holes so that the hanging plate portions of both members can be adjusted so as to adjust the mutual distance between them, and the nuts are positioned and fixed by a pair of upper and lower nuts. The rising part formwork fixing jig according to any one of the above. 6. A formwork fixing jig at a rising portion, which is concrete-integrated with a floor slab of a reinforced concrete structure, in which a lower end is fixed to each reinforcing bar of the floor slab or the beam, and a standing space is provided between them. A plurality of supporting rods, or cylindrical mounting brackets that are fastened to the column bars or vertical wall bars located at both ends of the rising part so that the vertical height can be adjusted, and individually fixed to these mounting brackets. The receivers are attached to the receivers by slidably fitting the head portions from both sides, and the hanging plate portions are attached to each other so as to face each other with an appropriate interval. 1. A rising part formwork fixing jig, comprising a pair of opposite L-shaped supports for positioning and holding both formwork positions through a stopper.